diff --git a/src/etc/inc/plugins.inc.d/dyndns.inc b/src/etc/inc/plugins.inc.d/dyndns.inc
index f1b1a4671..7eb8e9654 100644
--- a/src/etc/inc/plugins.inc.d/dyndns.inc
+++ b/src/etc/inc/plugins.inc.d/dyndns.inc
@@ -127,7 +127,7 @@ function dyndns_cache_file($conf, $ipver = 4)
 {
     $ipver = $ipver == 6 ? '_v6' : '';
 
-    return "/var/cache/dyndns_{$conf['interface']}_{$conf['host']}_{$dyndns['id']}{$ipver}.cache";
+    return "/var/cache/dyndns_{$conf['interface']}_{$conf['host']}_{$conf['id']}{$ipver}.cache";
 }
 
 function dyndns_configure_client($conf)
diff --git a/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc b/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
index cf003ee83..a73d1c3df 100644
--- a/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
+++ b/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
@@ -1252,7 +1252,7 @@
 					$currentTime = time();
 					notify_all_remote(sprintf(gettext("Dynamic DNS updated IP Address on %s (%s) to %s"), convert_real_interface_to_friendly_descr($this->_if), $this->_if, $wan_ip));
 					log_error("Dynamic DNS: updating cache file {$this->_cacheFile}: {$wan_ip}");
-					@file_put_contents($this->_cacheFile, "{$wan_ip}:{$currentTime}");
+					@file_put_contents($this->_cacheFile, "{$wan_ip}|{$currentTime}");
 				} else
 					@unlink($this->_cacheFile);
 				if ($this->_useIPv6 == true && $wan_ip > 0) {
@@ -1345,13 +1345,13 @@
 			} else {
 				if (file_exists($this->_cacheFile)) {
 					$contents = file_get_contents($this->_cacheFile);
-					list($cacheIP,$cacheTime) = explode(':', $contents);
+					list($cacheIP,$cacheTime) = explode('|', $contents);
 					$this->_debug($cacheIP.'/'.$cacheTime);
 					$initial = false;
 					$log_error .= "Cached IP: {$cacheIP} ";
 				} else {
 					$cacheIP = '0.0.0.0';
-					@file_put_contents($this->_cacheFile, "0.0.0.0:{$currentTime}");
+					@file_put_contents($this->_cacheFile, "0.0.0.0|{$currentTime}");
 					$cacheTime = $currentTime;
 					$initial = true;
 					$log_error .= "No Cached IP found.";
diff --git a/src/etc/inc/plugins.inc.d/rfc2136.inc b/src/etc/inc/plugins.inc.d/rfc2136.inc
index c23a01f42..16c9a364c 100644
--- a/src/etc/inc/plugins.inc.d/rfc2136.inc
+++ b/src/etc/inc/plugins.inc.d/rfc2136.inc
@@ -84,7 +84,7 @@ function rfc2136_cron()
     return $jobs;
 }
 
-function rfc2136_cache_file($dnspdate, $ipver = 4)
+function rfc2136_cache_file($dnsupdate, $ipver = 4)
 {
     $ipver = $ipver == 6 ? '_v6' : '';
 
diff --git a/src/www/services_dyndns.php b/src/www/services_dyndns.php
index ddab3cec8..9d3b9a2c6 100644
--- a/src/www/services_dyndns.php
+++ b/src/www/services_dyndns.php
@@ -162,7 +162,7 @@ $main_buttons = array(
                       }
 
                       if (!empty($fdata)) {
-                          $cached_ip_s = explode(':', $fdata);
+                          $cached_ip_s = explode('|', $fdata);
                           $cached_ip = $cached_ip_s[0];
                           echo sprintf(
                               '<font color="%s">%s</font>',
diff --git a/src/www/services_rfc2136.php b/src/www/services_rfc2136.php
index b6095e9c6..f62059177 100644
--- a/src/www/services_rfc2136.php
+++ b/src/www/services_rfc2136.php
@@ -148,7 +148,7 @@ $main_buttons = array(
                       <td>
 <?php
                         $filename = rfc2136_cache_file($rfc2136, 4);
-                        if (file_exists($filename) && !empty($rfc2136['enable']) && (empty($dnsupdate['recordtype']) || $dnsupdate['recordtype'] == 'A')) {
+                        if (file_exists($filename) && !empty($rfc2136['enable']) && (empty($rfc2136['recordtype']) || $rfc2136['recordtype'] == 'A')) {
                             echo "IPv4: ";
                             if (isset($rfc2136['usepublicip'])) {
                                 $ipaddr = get_dyndns_ip($rfc2136['interface'], 4);
@@ -169,7 +169,7 @@ $main_buttons = array(
                         }
                         echo "<br />";
                         $filename6 = rfc2136_cache_file($rfc2136, 6);
-                        if (file_exists($filename6) && !empty($rfc2136['enable']) && (empty($dnsupdate['recordtype']) || $dnsupdate['recordtype'] == 'AAAA')) {
+                        if (file_exists($filename6) && !empty($rfc2136['enable']) && (empty($rfc2136['recordtype']) || $rfc2136['recordtype'] == 'AAAA')) {
                             echo "IPv6: ";
                             if (isset($rfc2136['usepublicip'])) {
                                 $ipaddr = get_dyndns_ip($rfc2136['interface'], 6);
diff --git a/src/www/widgets/widgets/dyn_dns_status.widget.php b/src/www/widgets/widgets/dyn_dns_status.widget.php
index b346bc069..5d73cab61 100644
--- a/src/www/widgets/widgets/dyn_dns_status.widget.php
+++ b/src/www/widgets/widgets/dyn_dns_status.widget.php
@@ -65,7 +65,7 @@ if (!empty($_REQUEST['getdyndnsstatus'])) {
         }
 
         if (!empty($fdata)) {
-            $cached_ip_s = preg_split('/:/', $fdata);
+            $cached_ip_s = explode('|', $fdata);
             $cached_ip = $cached_ip_s[0];
             echo sprintf(
                 '<font color="%s">%s</font>',